Shock Resistant Ribbon Cartridge
Original Publication Date: 1987-Sep-01
Included in the Prior Art Database: 2005-Feb-02
Loops on the outer circumference of a ribbon within a cartridge are prevented from dropping into the space between the cartridge side wall and the outer circumference of the ribbon due to either slack tension or rough handling prior to installing the cartridge on a typewriter. The cartridge 1 has the outer clearance because it is designed to accommodate manufacturing tolerances. The bottom wall portion 2 of cartridge 1 is molded concave upwardly into the cartridge to provide a clamping action until cartridge 1 is installed.